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	Provedor de dados Anais da ABC (AABC) (1) Scientia Agricola (1) Autor ARAÚJO,JOSIANE S. (1) Abreu Jr.,Cassio Hamilton (1) CAMPOS,NAIARA V. (1) GUERRA,MARCELO B.B. (1) Lavorante,André Fernando (1) MACHADO,MARIANA F. (1) Muraoka,Takashi (1) PEREIRA,TIAGO A.R. (1) REZENDE,MAÍRA Q. (1) SCHAEFER,CARLOS E.G.R. (1) SILVA,MARIA CAROLINA N.A. DA (1) TOLENTINO,GLÁUCIA S. (1) Mais... Palavra-chave Aluminon (2) Al-hyperaccumulator plants (1) Chrome azurol (1) Colorimetry (1) Eriochrome cyanine R (1) FIA (1) High Altitude Rocky Complexes (1) Titrimetry (1) Μ-EDX (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2003 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Exchangeable aluminum evaluation in acid soils Scientia Agricola Abreu Jr.,Cassio Hamilton; Muraoka,Takashi; Lavorante,André Fernando. One of the main factors limiting agricultural production in tropical climate regions is mainly related to the presence of exchangeable aluminum (Al3+) in highly weathered acid soils. Four methods of Al3+ determination extracted with neutral 1 mol L¹ KCl solution were evaluated: three colorimetric methods (aluminon plus ascorbic acid, and eriochrome cyanine R by FIA) and the usual titrimetric method with back-titration. Surface samples from 20 soils of different Brazilian regions, with active acidity (0.01 mol L¹ CaCl2 pH) ranging from very high to medium (3.82 to 5.52), were used. The variance analysis revealed significant interaction among Al3+ determination methods and soil. Mean methods comparisons within each soil (Tukey, P < 0.05) indicated that,... Tipo: Info:eu-repo/semantics/article Palavras-chave: FIA; Aluminon; Colorimetry; Eriochrome cyanine R; Titrimetry. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300020 Evaluation of micro-energy dispersive X-ray fluorescence and histochemical tests for aluminium detection in plants from High Altitude Rocky Complexes, Southeast Brazil Anais da ABC (AABC) CAMPOS,NAIARA V.; PEREIRA,TIAGO A.R.; MACHADO,MARIANA F.; GUERRA,MARCELO B.B.; TOLENTINO,GLÁUCIA S.; ARAÚJO,JOSIANE S.; REZENDE,MAÍRA Q.; SILVA,MARIA CAROLINA N.A. DA; SCHAEFER,CARLOS E.G.R.. The soils developed under High Altitude Rocky Complexes in Brazil are generally of very low chemical fertility, with low base saturation and high exchangeable aluminium concentration. This stressful condition imposes evolutionary pressures that lead to ecological success of plant species that are able to tolerate or accumulate high amounts of aluminium. Several analytical methods are currently available for elemental mapping of biological structures, such as micro-X-ray fluorescence (μ-EDX) and histochemical tests. The aim of this study was to combine μ-EDX analysis and histochemical tests to quantify aluminium in plants from High Altitude Rocky Complexes, identifying the main sites for Al-accumulation. Among the studied species, five showed total Al... Tipo: Info:eu-repo/semantics/article Palavras-chave: Al-hyperaccumulator plants; Aluminon; Chrome azurol; High Altitude Rocky Complexes; Μ-EDX. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000100285 Registros recuperados: 2 Primeira ... 1 ... Última

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